Safety device.



PATENTED SEPT. 5, 1905.

0. J. A. MAGHUT.

SAFETY DEVICE.

APPLIOATION rum) JAN. 11. 1905.

mumowmn. wnmamu. n c.

(llAhLlCH .l. A. MACIIU'I, ()F SilIGHUYhAN FALLS, \YISCONSIN.

SAFETY DEVICE- Specification 0? Letters Patent.

Patented Sept. 5, 1905.

Application filed January 11, 1905. Serial No. 240,541.

To [LU 'u'Ym/It it 71mg concern;

Be it known that I, CHARLES J. A. Macnur, a citizen of the UnitedStates, and a resident of Sheboygan Falls. in the county of SheboyganandStateof \Yisconsin. have invented certain new and useful Improvements inSafety Devices; and I do hereby declare that the fol- 1 lowing is afull, clear, and exact description thereof.

Ely invention relates to safety devices for use in factories and otherplaces litted with lines of shafting; and it consists in certainpeculiarities of construction and combination of parts, as will be fullyset forth hereinafter in connection with the accompanying drawing andsubsetpiently claimed.

in the said drawing the figure represents a line of shafting with myimproved safety device arranged adjacent thereto.

heferring by numerals to the said drawing, 1 designates a line ofshafting on which there is loosely mounted a belt-pulley 2.

t designates a spider=frame having a hub fast on the shaft 1, the armsof this spider having ears 5, to which are cent rally pivoted levers b,to whose outer ends are secured bolts T for engagement with holes in thespider-arms and web of the pulley 2.

S designates a hub sliding on the shaft 1 and guided by feather 9thereon. This hub has ears It), to which are pivoted the adjacent endsof links 11, whose other ends are pivoted to the inner ends of thehereinbcfore-named levers b. llence when the hub 8 is moved toward thepulley the bolts T are withdrawn from the holes in the pulley-web, andsaid pulley is thereby loose on the shaft 1; but if the hub S is movedaway from the said pulley this will force the said bolts 7 into saidholes, thereby causing the said device to act as a clutch.

12 represents a lever. which is attached by pivot-bolt 13 to someconvenient part of the structure containing the shafting (and ispreferably made like a spanner) at some little distance from its pivotalpoint, as shown at H it. The hub o is formed with an annular exteriorgroove near its outer end in which is titted a loose ring 15, from whichthere project pins it, which engage with holes in the spanner parts M ofthe lever 12, whereby the hub s is permitted to revolve with the shaft 1and be capableof being moved longitudinally on said shaft by said lever1Q.

17 designates a friction-pulley fast on the shaft 1, which pulleyordinarily runs freetherewith: but suspended by a loop 1b from anyconvenient adjacent part of the structure is a strap 12), preferably ofmetal, surrounding said pulley 17, the ends of said strap beingconnected together and to an upright .20 by the head of a lever 21,pivoted to said upright, so that a downward pull on said lever willserve to draw the ends of the strap together and bind the strap on thepulley, formng a friction-brake.

2'2 represents a weight-well, within which travels a weight 23, having aring 24: secured at its top, to which a cord 25, ending in spring 26from the lever 21, is connected. Another cord 27 extends from the ring2% to and around a Windlass-roller .28, supported above the weight-well,this cord being wound up by a crank 29 and the said roller having alateral pin 30, which when the weight has been wound up to the top ofthe eight-well, normally rests on a lever 31 to keep the roller frombeing turned by the weight., This lever is pivoted by pivot-bolt 32 atone end to an adjacent part of the structure to which is also secured aguide or keeper 2);) to limitthe movement of the free end of said lever.

Parallel with the line of shafting 1 isaline of wire, cord, or othercable (indicated at 3+L 34:) made in sections and united by series ofbell-crank levers 35 35 35, secured to the structure (not shown) andpreferably connected together, and from one of these bellcranks a cord36 extends to the hereinbeforenamed lever The weight-well 2 is formedwith a vertical slot 37 in one of its walls, through which thereprojects one end of a lever 38, whose other end is secured by pivot-bolt39 to any convenient parto'f the structure, (not shown,) which structurealso supports small sheaves at) and i1, and a cord t2 extends from thelever 38 up and around the said sheaves t0 t1 and to the free end of thehereinbefore-named lever [2, the end of the lever 38, which projectsinto the weight-well 22, being under and in the path of the raisedweight 23.

The object of my invention is to all'ord means for the quick stoppage ofthe revolution of the shafting l in the event of any one becoming caughtor entangled thereby, and the operation of my device will be readilyunderstood from the foregoing description of its construction, taken inconnection with the accompanying drawing. As already explained, thewire, cord, or other cable 34 follows the line' of shafting 1 at aslight distance therefrom, this being made possible by the describedbell-crank levers 35, so that counter-shafts may be followed by theparallel cable 34 all over the building. Now, for

: example, if a workman gets entangled in any manner with the shaftinghis arm, leg, or other part of the body will shortly come in contactwith said cable 34 and this draws on the bell-crank levers, and as soonas the lever connected to cord 36 is drawn on this Will pull on lever 32and withdraw it from under the detent-pin 30, whereupon the weight 23will be free to descend, unwinding the cord 27 on the Windlass-roller28, and in such descent the weight will first strikethe-inwardlyprojecting end of lever 38. This Will instantly draw on cord42, and thus on the free end of lever 12, thereby forcing hub 8 intoward the belt-pulley 2, and thus through the described clutch-leversand connections withdrawing the bolts 7 from the web of said pulley 2,so that same will run free of the shaft 1. However, the momentum of theshaft would cause same to continue to revolve and injury to the workmanmight result therefrom; but as the weight 23 continues to descend in theweight-well 22 it will presently draw on the cord and spring 25 26 andthrough these on the attached end of lever 21, thus drawing the strap 19down tight on the friction-pulley 17, thus forming an effectivefriction-brake, which will instantly stop the revolution of the pulleyl7, and thus of the shaft 1, to which it is rigidly attached, thusserving by stopping the shafting and all the parts connected thereto oroperated therefrom to save lifeand limb of the imperiled workman.

As before stated, I have not thought it advisable to obscure the drawingby showing a multitude of beams and rafters constituting the structureof the factory; but I have shown the pivotal connections in eachinstance by Which the various levers, sheaves, or other parts areattached to such structure, so that there would be no uncertainty inthis respect by those skilled in the art, and where I have referred to acord, Wire, or cable, it will be understood that any preferred flexibleconnection may be employed.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is

1. The combination With a line of shafting having a power-pulley withclutch mechanism thereon, and a lever for operating the latter, of asafety device comprising a line of cable extending parallel to said.line of shafting, and made in sections, and bell-crank levers unitingsaid sections; a Weight-well; a weight movable therein, aWindlass-roller, and an adjacent pivoted lever supported above saidweight well; a cord extending from said weight to and around saidroller; a detent-pin on said roller normally resting on said adja: centlever; a cord connecting said lever with one of the bell-crank levers ofthe said line of cable parallel to the line of shafting; a leverprojecting into the Weight-well in the path of the descending Weight;and a cord connecting said lever with the lever that-operates the clutchmechanism on the line of shafting.

2. The combination with a line of shafting having a power-pulley foroperating the same, of a friction-pulley fast on said shafting; a strapsurrounding said friction-pulley, the ends of said strap being connectedtogether and to the head of a lever to form a frictionbrake by thedepression of the latter; a line of cable extending parallel to saidline of shafting, and made in sections, and bell-crank levers unitingsaid sections; a weight-well; a Weight movable therein; aWindlass-roller, and an adjacent pivoted lever supported above saidWeight-Well; a cord extending from said weightto and around said roller;a detent-pin.

on said roller normally resting on said adjacent lever; a cordconnecting said lever with one of the bell-crank levers of the said lineof cable parallel to the line of shafting; and a flexible connectionbetween the said Weight, and the lever connected to the saidfrictionstrap.

In testimony that I claim the foregoing I have hereunto set my hand, atSheboygan Falls, in the county of Sheboygan and State of \Visconsin, inthe presence of two Witnesses.

CHARLES J. A. MACHUT. Witnesses:

FRANK A. FENNER, OTTo C. E. MACHUT.

